Sadly, but probably inevitably, it seems that MoD bean counters have decided to flog off 206 Brompton Road:
MoD to sell WWII Tube station command bunker - Telegraph
Many happy memories of the place, both as a student from 1969-73 and as a QFI from 1989-93.....
But with a cash-strapped MoD and an ever-shrinking air 'force', is there any wonder that the eyes of the MoD bean counters have spotted this 'opportunity'?